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Which of the following numbers will replace the question mark (?) in the given series? 3, 17, 83, 329, ?, 1961
Question

Which of the following numbers will replace the question mark (?) in the given series?

3, 17, 83, 329, ?, 1961

A.

983

B.

883

C.

880

D.

980

Correct option is A

3, 17, 83, 329, ?, 1961

3×6- 1=17

17×5- 2=83

83 ×4 - 3=329

329 ×3 - 4 = 983

983 ×2 - 5 = 1961

missing term is 983

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